Electrical accumulator-plate



C. P. ELIESON, DECD.

c. A. ELlEsoN. ixfcumlx.

ELECTRICAL ACGUIVIULATORl PLATE.

APPLICATION FILED DEC. I0, 1919. 1,357,548. Patented Nov. 2, 1920.

2 SHEETS-SHEET I.

IIIIII IIIIIIIIII iIIIIIIIIIIIIIIIIIIIIIIIIII II I IIIIII III IIIIIIIII 'X UNHTED STATES PATENT OFFICE.

CHAIMSONOVITZ PROSPER ELESON, DECEASED, BY CECILIA ANN ELIESON, EXECU- TRIX, OF LONDON, ENGLAND.

ELECTRICAL lrCCUrULATOR-PLATE.

Application filed December 10, 1919.

To all 10710712, 77; may concern.'

Be it known that l, CECILIA ANN Emnson, a subject of the ling of Great Britain and lreland, residing at London, England, am executrix of the last will and testament of Cnamrsoivovirz Pnosrna lilninsori, late a sub- `iect of the King of Great Britain and 1reland, deceased, who has invented certain new and useful improvements in lElectrical ccumulttor-Plates, of which the following a specification.

rllhis invention relates to an improved electrical accumulator plate of the Plante or 'the like kind, which are built up by securing a number of comparatively narrow strips of corrugated lead in a frame or support so that they lie one next to the other in planes at right angles to the vertical plane of the plate so constructed.

The object of the present invention is to increase the efficiency of the plate by pro viding, for relatively small overall diinen sions, a comparatively great effective surfa ce or area.

ln the drawings lligure l. represents a length of thin lead sheet finely corrugated, with its edges provided with plain enlarged portions, and broken away at its ends.

Fig. 2. is an enlarged cross sectional view of the length of lead sheet showing one form of Vline corrugation.

Fig. 3. is an enlarged cross sectional View of the length of the lead sheet showing another form of fine corrugation.

Fig. is a front elevation of a strip cut from the length shown in Fig. l.

Fig. 5. is an end elevation Correspending` to Fig. el.

6. a front elevation of one form of electrical accumulator plate made up by arranging strips shown in Figs. 4 and 5 in a frame.

liig. 7 is an end elevation corresponding to Fig. (i.

Fig. 8. is a cross section on the line :1?a of 6 showing` corrugations of the form depicted in Fig. 2.

Figs. 9 and l0 are front elevations of inodiiied forms of plate, these constructions being particularly suitable for the larger types.

ln carrying out the invention a length of thin sheet lead, of a thickness of from .001

inch upward, preferably .01 inch, is corru- Speceaton of Letters Patent.

Patented Nov. 2, 1920.

Serial No. 343,920.

gated in any suitable manner known in the art for example by crimping rollers, to form a length (l) F ig. l, having the corrugations (2) of line pitch.

This length (l) of finely corrugated lead sheet is provided at its edges with plain narrow portions (3) and (et) respectively, which are slightly thicker than the thickness represented by the amplitude of the corrugations.

The thin lead sheet may be finely corrugated, as shown in Fig. 2 so vthat the fine corrugations (2) are formed as flattened corrugations or pleatings, that is, the corrugations instead of being of the usual rounded or open form are reduced in pitch to a mininiuin so as to leave only sufficient space between the folds or pleats to be filled up subsequently by the oxidation when undergoing the usual process of formation, or as shown in Fig. 3, the corrugations may be of the usual form but of a fine pitch of the order of .O5 inch.

The length (l) of finely corrugated. lead sheet is cut in to strips of inch to inch in width, although this width may be greater or less as desired, and according to the width of the frame in which they are to be inserted as described hereafter.

A strip (5) cut from the length (l) is shown in Figs. t and 5 from which it will be seen that the plain thickened portions (3) and (t) of the length (l), form thickened plain ends (6), (7) of the strip.

The strips (5) are arranged, preferably vertically, surface to surface in closely spaced relation within a lead frame (8), Figs. 6-8 so that they lie in planes at right angles to the vertical plane of the plate so formed and with all of the corrugations running longitudinally of the strips. T he frame (8) may be provided with a lug (9) te enable it to be connected to another plate or to a terminal as known in the art.

The strips so arranged are secured at their thickened ends to bars (l0), (1l) of the frame (8), by burning or in any other suitable manner well known in the art, the plain thickened ends (6) (7) in addition to facilitating burning of the strip in position, serving as spacing members.

The flattened forni of corrugation or plaiting is shown in this example, although the other form may be adopted if desired. When the form shown Fig. 8 is adopted ln the larger types of plate strengthening cross bars are employed as in Figs. 9 and 10.

Referring to Fig. 9 the frame (12) is divided into four panels (13), (111), (15), (16) by cross bars (17) and (18) the finely corrugated strips (5) being arranger., preferably vertically, surface to surface and in closely spaced relation within each of the panels (13), (111), (15), (16) so as 'to lie in planes at right angles to the plane of the plate so formedwith all of the corrugations running lengthwise of the strips. rlhe strips are'secured in the panels (13), 1%1) by burning their thickened ends (6), ('7) to the bars (18), (19) respectively of the frame (12), and those in theV panels (15), and (16) are secured by burning their thickened ends (7), (6) to the bars (1S) and (20) respectively of the frame, the thickened ends (6), (7) in both cases acting as spacing members for the strips.

A lug (21) is provided on the frame (12) to enable it to be connected to another plate, or to a terminal as is well known in the art,

Referring to Fig. 10 a lead frame (22) is divided into two panels (23), (2st) by a cross bar The panels are filled in by the finely corrugated strips (5) which are arranged, preferablyv vertically, surface to surface in closely spaced relation within the panels soras to lie inplanes atV right angles to the plane of the plate so formed, with all f of the corrugations running longitudinally of the strips.

Y rlhe strips are secured in the panels by burning their thickened plain ends (6), (Y) to the bars (26), (27) respectively of the frame the thickened plain ends serving as spacing members in addition to facilitating securing of thestrips in position.

A lug (28) is provided on the frame (22) to enable it to be connected to another plate, or to a terminal as is well known in the art.

By arranging the strips vertically a free Vpassage for the gases evolved is obtained.

l claim-f 1. An .accumulator plate, comprising a frame, and a. series of independent strips of sheet lead in finely corrugated form arranged in such frame, with the strips in a plane at right angles tothe plane of the frame, the spaces and ribs formed by the corrugations extending longitudinally of the strips.

2. An accumulator plate, comprising a Y frame, and a series of independent strips of sheet lead in finely corrugated form arranged in such frame, with the strips in a plane at right angles to the'plane of the frame, the strips being arranged with their corrugated surfaces in parallelism, and the spaces and ribs formed by the corrugations extending longitudinally of the strips.

' 3. An accumulator plate, comprising a frame, and strips therein having finely corrugated surfaces and end portions of greater thickness than the maximum similar dimension of the corrugated surface, said strips being arranged in the frame with their end portions in contact and their corrugated portions spaced from each other.V

4l. An accumulator plate, comprising a` frame, and strips therein having finely corrugated surfaces and end portions of greater thickness than the maximum similar dimension of the corrugated surface, said strips being arranged in the frame with their end portions in contact and their corrugated portions spaced from each other, the spaces and ribs formed by the corrugations ofall strips extending longitudinally thereof.

5.`An accumulator plate, comprising a frame, and strips therein having finely corrugated surfaces and end portions of greater thickness than the maximum similar dimension of the corrugated surface, said strips being arranged in the frame with their end portions in contact and their corrugated portions spaced from each other, the corrugated portion of each strip being in a plane at right angles to the plane of the frame.

6. An accumulator platey comprising a frame and a series of independent strips of sheet material arranged in such frame, each of said strips having a main length formed into line corrugations extending longitudinally of and throughout said main length, each strip having end portions of increased thickness as compared with'the main length of such strip, the strips being arranged in the frame in parallel relation at right angles to the plane of the frame, with the end portions of adjacent strips in Contact to space the main Vlengths of such strips.

. In testimony whereof l havesigned my name to this specification in the presence' of two subscribing witnesses.

CECILIA ANN ELESCN, Lleouto'e'm of zaz'meonom'te Prosper son, deceased.

Witnesses CHARLES ARTHUR Corien, CHARLES ROBERT PEARGH. 

